CN213277925U - Gas insulation looped netowrk cabinet with load switch unit - Google Patents
Gas insulation looped netowrk cabinet with load switch unit Download PDFInfo
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- CN213277925U CN213277925U CN202022291107.XU CN202022291107U CN213277925U CN 213277925 U CN213277925 U CN 213277925U CN 202022291107 U CN202022291107 U CN 202022291107U CN 213277925 U CN213277925 U CN 213277925U
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Abstract
The utility model discloses a gas insulation looped netowrk cabinet with load switch unit, including the cabinet body and three station switch units, the utility model discloses still including being used for control the electromagnetic repulsion mechanism that three station switch units opened and close the floodgate and with the energy storage electric capacity that electromagnetic repulsion mechanism electricity links, electromagnetic repulsion mechanism with three station switch units are connected. The utility model adopts the above structure a gas insulation looped netowrk cabinet with load switch unit, knotThe structure is simple, the operation is convenient, the electromagnetic repulsion mechanism improves the closing and opening speed, the electric arc is quickly extinguished, the load current can be switched off in environment-friendly gas, and the mechanism can also be used for SF6Insulating looped netowrk cabinet, cabinet body size is little effectively reduces the area of looped netowrk cabinet.
Description
Technical Field
The utility model relates to an electrical equipment technical field especially relates to a gas insulation looped netowrk cabinet with load switch unit.
Background
The ring main unit is an electrical device assembled in a steel plate metal main unit body or made into an assembled interval ring main unit, and the core part of the ring main unit adopts a load switch and a fuse, so that the ring main unit has the advantages of simple structure, small volume, low price, capability of improving power supply parameters and performance, power supply safety and the like.
The load switch is a switch electric appliance with a simple arc-extinguishing grid, can close and open load current and overload current, wherein the three-position load switch with the functions of connection, disconnection and grounding has the characteristics of simple structure and low price, but the current three-position load switch has a complex structure, large floor area and slow brake-separating speed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a gas insulation looped netowrk cabinet with load switch unit to it is complicated to solve above-mentioned three station load switch structures, and the volume is great, the slow problem of switching speed.
In order to realize the above purpose, the utility model provides a gas insulation looped netowrk cabinet with load switch unit, including the cabinet body and three station switch units, the utility model discloses still including being used for control the electromagnetism repulsion mechanism of three station switch units switching on and off and with the energy storage electric capacity that electromagnetism repulsion mechanism electricity links, electromagnetism repulsion mechanism with three station switch units are connected.
Optimized, three station switch units include the stationary contact be connected with the arc chute, correspond stationary contact setting move sword and load switch operating axis and connecting lever, load switch operating axis one end with electromagnetic repulsion mechanism connects, the load switch operating axis other end through first connecting rod with the connecting lever is connected, the connecting lever through insulating pull rod with move the sword and connect, move be provided with on the sword with the corresponding movable contact of stationary contact, the load switch operating axis still with be fixed in load switch pole on the cabinet body is connected.
Preferably, the first connecting rod comprises a first rod section and a second rod section, one end of the second rod section is rotatably connected with one end of the first rod section, the other end of the first rod section is fixedly connected with the load switch operating shaft, the other end of the second rod section is fixedly connected to the outer side of the crank arm through a connecting piece, and the second rod section is rotatably connected with the connecting piece.
Preferably, the three-position switch unit further comprises a grounding operation shaft and a grounding contact which is fixed on the crank arm and corresponds to the movable contact, one end of the grounding operation shaft is connected with the crank arm through a second connecting rod, and the other end of the grounding operation shaft is connected with a grounding operation rod fixed on the cabinet body.
Preferably, the load switch rod comprises a first section of rod with one end fixedly connected with the load switch operating shaft and a second section of rod with one end rotatably connected with the other end of the first section of rod, and the second section of rod is sleeved with a load switch retaining spring and is fixed on the cabinet body;
the grounding operating rod comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is fixedly connected with the grounding operating shaft, the other end of the first connecting rod is rotatably connected with the second connecting rod, and the second connecting rod is sleeved with a grounding operating spring and is fixed on the cabinet body.
Preferably, the second connecting rod comprises a first connecting section and a second connecting section, one end of the second connecting section is rotatably connected with one end of the first connecting section, the other end of the first connecting section is fixedly connected with the grounding operation shaft, and the other end of the second connecting section is rotatably connected with the connecting sheet.
Preferably, the first connecting rod and the second connecting rod are respectively connected to two ends of the connecting piece, the middle of the connecting piece is fixedly connected with the connecting lever, and stroke margins are reserved at the connecting position of the first connecting rod and the connecting piece and the connecting position of the second connecting rod and the connecting piece.
Preferably, the three-position switch unit is a three-phase circuit, a wire inlet end and a wire outlet end are respectively arranged outside the cabinet body, the wire inlet end and the wire outlet end are both provided with insulating sleeves, the wire inlet end is connected with the wire outlet end through a current sensor, the movable knife and the stationary contact in sequence, and the wire outlet end is further connected with the arc chute.
Preferably, one side of the electromagnetic repulsion mechanism is also provided with a controller and a position display connected with the crank arm.
Optimally, the cabinet body is filled with an insulating medium, and the insulating medium is SF6Or 3M4710 and CO2Mixed gas or environmental protection gas.
Therefore, the utility model adopts the above structure a gas insulation looped netowrk cabinet with load switch unit has following beneficial effect:
1. the electromagnetic repulsion mechanism is arranged, and the switch can be quickly opened and closed through the cooperation of the electromagnetic repulsion and the spring.
2. The three-position switch is consistent with the traditional switch, and the operation is simple.
3. The cabinet body size is little, as the core mechanism of looped netowrk cabinet, can effectively reduce the area of looped netowrk cabinet.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic view of an embodiment of a gas insulated ring main unit with a load switch unit according to the present invention;
fig. 2 is a schematic diagram of a switching-on position of an embodiment of the gas insulated ring main unit with a load switch unit according to the present invention;
fig. 3 is a schematic diagram of a closing operation process of an embodiment of the gas insulated ring main unit with a load switch unit according to the present invention;
fig. 4 is a schematic diagram of an opening position of an embodiment of the gas insulated ring main unit with a load switch unit according to the present invention;
fig. 5 is a schematic diagram of the grounding switch-on position of the embodiment of the gas insulated ring main unit with the load switch unit according to the present invention.
In the figure: 1. a cabinet body; 2. an electromagnetic repulsion mechanism; 3. an energy storage capacitor; 4. an arc chute; 5. a stationary contact; 6. a load switch operating shaft; 7. a crank arm; 8. moving a knife; 9. an insulating pull rod; 10. a load switch holding spring; 11. a ground operating shaft; 12. a ground contact; 13. a current sensor; 14. a controller; 15. a position display.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The following will further describe embodiments of the present invention with reference to the accompanying drawings, and fig. 1 is a schematic diagram of an embodiment of a gas insulated ring main unit with a load switch unit according to the present invention; fig. 2 is a schematic diagram of a switching-on position of an embodiment of the gas insulated ring main unit with a load switch unit according to the present invention; fig. 3 is a schematic diagram of a closing operation process of an embodiment of the gas insulated ring main unit with a load switch unit according to the present invention; fig. 4 is a schematic diagram of an opening position of an embodiment of the gas insulated ring main unit with a load switch unit according to the present invention; fig. 5 is a schematic diagram of the grounding switch-on position of the embodiment of the gas insulated ring main unit with the load switch unit according to the present invention. As shown in the figure, the utility model provides a gas insulation looped netowrk cabinet with load switch unit, including the cabinet body 1 and three station switch unit, the utility model discloses still including the electromagnetic repulsion mechanism 2 that is used for controlling three station switch unit switches on and off and the energy storage electric capacity 3 that links even with electromagnetic repulsion mechanism electricity, electromagnetic repulsion mechanism 2 is connected with three station switch units, and electromagnetic repulsion mechanism 2 can break load switch unit at a high speed in the environmental protection gas. It should be noted that the electromagnetic repulsion mechanism 2 and the energy storage capacitor 3 act as follows: the pre-charged energy storage capacitor 3 discharges to the driving coil, pulse current is generated in the coil, the pulse current enables an alternating magnetic field to be generated around the coil, reverse induced eddy current is generated on the metal disc, the magnetic field generated by the eddy current and the magnetic field generated by the coil current interact to generate electromagnetic force, the crank arm 7 and the movable contact inside the cabinet body 1 are driven to move, and the opening and closing operation of the switch is achieved. The three-station switch unit comprises a fixed contact 5 connected with an arc extinguishing bar 4, a movable knife 8 arranged corresponding to the fixed contact 5, a load switch operating shaft 6 and a connecting lever 7, one end of the load switch operating shaft 6 is connected with an electromagnetic repulsion mechanism 2, the electromagnetic repulsion mechanism 2 is fixedly connected with the load switch operating shaft through a rod body, the rod body comprises a first rod body and a second rod body, one end of the first rod body is fixedly connected with the electromagnetic repulsion mechanism, the other end of the second rod body is rotatably connected with the other end of the first rod body, the other end of the second rod body is fixedly connected with one end of the load switch operating shaft 6, the other end of the load switch operating shaft 6 is connected with the connecting lever 7 through a first connecting rod, the connecting lever 7 is connected with the movable knife 8 through an insulating pull rod 9, the movable knife 8 is provided with a movable contact corresponding to the fixed contact 5, the fixed contact 5 is contacted with the movable contact of the movable knife 8 during switching-on, when the cabinet body is grounded, the movable contact of the movable knife is in contact with the grounding contact 12 fixed on the crank arm 7, and the load switch operating shaft 6 is also connected with a load switch rod fixed on the cabinet body. The first connecting rod comprises a first rod section and a second rod section, the first rod section is connected with the load switch operating shaft 6, and one end of the second rod section is connected to the crank arm 7 through a connecting piece fixed on the crank arm 7. The first connecting rod comprises a first rod section and a second rod section, one end of the second rod section is rotatably connected with one end of the first rod section, the other end of the first rod section is fixedly connected with the load switch operating shaft 6, the other end of the second rod section is fixedly connected to the outer side of the crank arm 7 through a connecting piece, and the second rod section is rotatably connected with the connecting piece.
The three-position switch unit further comprises a grounding operation shaft 11 and a grounding contact 12 which is fixed on the crank arm 7 and corresponds to the movable contact, one end of the grounding operation shaft 11 is connected with the crank arm 7 through a second connecting rod, and the other end of the grounding operation shaft 11 is connected with a grounding operation rod fixed on the cabinet body 1. The load switch pole includes that one end and the first section pole of 6 fixed connections of load switch operating axis and one end rotate the second section pole of being connected with the first section pole other end, and second section pole cover has load switch holding spring and is fixed in on the cabinet body 1, and the ground connection operating lever includes that one end rotates the second connecting rod of being connected with the head rod other end with head rod connecting rod and one end and 11 fixed connection of ground connection operating axis, and the second connecting rod cover has ground connection operating spring and is fixed in on the cabinet body 1. The second connecting rod comprises a first connecting section and a second connecting section, one end of the second connecting section is rotatably connected with one end of the first connecting section, the other end of the first connecting section is fixedly connected with the grounding operation shaft 11, and the other end of the second connecting section is rotatably connected with the connecting piece. The first connecting rod and the second connecting rod are respectively connected to two ends of the connecting piece, the middle of the connecting piece is fixedly connected with the connecting lever 7, stroke allowance is reserved at the connecting position of the first connecting rod and the connecting piece and the connecting position of the second connecting rod and the connecting piece, and when the switching-on process of the load switch operating shaft 6 is carried out, the stroke allowance at the connecting position of the second connecting rod and the connecting piece guarantees that the grounding operating shaft 11 does not rotate. The matched grounding switch can also realize quick opening and closing by using an electromagnetic repulsion mechanism, can close short-circuit current and realize remote electrical operation and control.
The three-position switch unit is a three-phase circuit, a wire inlet end and a wire outlet end are respectively arranged outside the cabinet body 1, the wire inlet end and the wire outlet end are both provided with insulating sleeves, the wire inlet end is connected with the wire outlet end through a current sensor 13, a movable knife 8 and a stationary contact 5 in sequence, and the wire outlet end is also connected with the arc extinguishing grid 4. A controller 14 and a position display 15 connected with the crank arm 7 are arranged on one side of the electromagnetic repulsion mechanism. The cabinet body 1 is filled with insulating medium which is SF6Or 3M4710 and CO2Mixed gas or environmental protection gas, can be 3M4710 and CO2The mixed gas (C) and other high-insulation performance gases break the load current.
The utility model discloses a concrete implementation process mainly divide into three operation process:
1. switching-on operation process of load switch
The electromagnetic repulsion mechanism pushes the first rod body upwards to drive the second rod body to push the load switch operating shaft to rotate clockwise, then the first rod section and the second rod section of the first connecting rod are sequentially driven, the connecting piece is pulled by the second rod section to rotate clockwise, the connecting lever is further driven to rotate clockwise, the insulating pull rod pushes the moving blade, and finally the moving contact of the moving blade is contacted with the static contact, so that the closing process is completed. When the first connecting rod drives the connecting lever to rotate clockwise, the second rod body cannot pull the grounding operation shaft to rotate due to the stroke allowance left between the connecting sheet and the second rod body.
2. Load switch opening operation process
The switching-off process of the load switch is opposite to the switching-on process of the load switch, the current sensor detects current, and the controller calculates the switching-off time to trigger the electromagnetic repulsion mechanism to complete the switching-off process.
3. Switching-on process of grounding switch
And rotating the grounding operation shaft clockwise, pushing and pressing the grounding operation spring in the rotating process, driving a second connecting rod after the spring passes through a dead point, pulling the crank arm to quickly switch on, and operating the grounding switch in a switching-off process opposite to the above process.
Therefore, the gas insulated ring main unit with the load switch unit, which adopts the structure, is provided with the electromagnetic repulsion mechanism, so that the rapid switching on and switching off can be realized; the three-position switch is consistent with the traditional switch, and the operation is simple; load switch is as the core mechanism of looped netowrk cabinet, and the cabinet body size is little can effectively reduce the area of looped netowrk cabinet.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the present invention, and these modifications should also be construed as the protection scope of the present invention.
Claims (10)
1. The utility model provides a gas insulation looped netowrk cabinet with load switch unit, includes the cabinet body and three station switch unit, its characterized in that: the three-station switch unit is characterized by further comprising an electromagnetic repulsion mechanism for controlling the three-station switch unit to be switched on and switched off and an energy storage capacitor electrically connected with the electromagnetic repulsion mechanism, and the electromagnetic repulsion mechanism is connected with the three-station switch unit.
2. The gas insulated ring main unit with the load switch unit as claimed in claim 1, wherein: the three-station switch unit comprises a stationary contact connected with an arc extinguishing grid, a movable knife corresponding to the stationary contact and a load switch operating shaft and a connecting lever, wherein one end of the load switch operating shaft is connected with the electromagnetic repulsion mechanism, the other end of the load switch operating shaft is connected with the connecting lever through a first connecting rod, the connecting lever is connected with the movable knife through an insulating pull rod, the movable knife is provided with a movable contact corresponding to the stationary contact, and the load switch operating shaft is further connected with a load switch rod fixed on the cabinet body.
3. The gas insulated ring main unit with the load switch unit as claimed in claim 2, wherein: the first connecting rod comprises a first rod section and a second rod section, one end of the second rod section is rotatably connected with one end of the first rod section, the other end of the first rod section is fixedly connected with the load switch operating shaft, the other end of the second rod section is fixedly connected to the outer side of the crank arm through a connecting piece, and the second rod section is rotatably connected with the connecting piece.
4. A gas insulated ring main unit with load switch unit as claimed in claim 3, wherein: the three-station switch unit further comprises a grounding operation shaft and a grounding contact which is fixed on the crank arm and corresponds to the movable contact, one end of the grounding operation shaft is connected with the crank arm through a second connecting rod, and the other end of the grounding operation shaft is connected with a grounding operation rod fixed on the cabinet body.
5. A gas insulated ring main unit with load switch unit as claimed in claim 4, wherein: the load switch rod comprises a first section rod and a second section rod, one end of the first section rod is fixedly connected with the load switch operating shaft, one end of the second section rod is rotatably connected with the other end of the first section rod, the second section rod is sleeved with a load switch retaining spring and fixed on the cabinet body, the grounding operating rod comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is fixedly connected with the grounding operating shaft, one end of the second connecting rod is rotatably connected with the other end of the first connecting rod, and the second connecting rod is sleeved with a grounding operating spring and fixed on the cabinet body.
6. A gas insulated ring main unit with load switch unit as claimed in claim 4, wherein: the second connecting rod comprises a first connecting section and a second connecting section, one end of the second connecting section is rotatably connected with one end of the first connecting section, the other end of the first connecting section is fixedly connected with the grounding operation shaft, and the other end of the second connecting section is rotatably connected with the connecting piece.
7. The gas insulated ring main unit with the load switch unit as claimed in claim 6, wherein: the first connecting rod and the second connecting rod are respectively connected to two ends of the connecting piece, the middle of the connecting piece is fixedly connected with the connecting lever, and stroke allowance is reserved at the connecting position of the first connecting rod and the connecting piece and the connecting position of the second connecting rod and the connecting piece.
8. The gas insulated ring main unit with the load switch unit as claimed in claim 2, wherein: the three-station switch unit is a three-phase circuit, a wire inlet end and a wire outlet end are respectively arranged outside the cabinet body, the wire inlet end and the wire outlet end are both provided with insulating sleeves, the wire inlet end is connected with the wire outlet end through a current sensor, the movable knife and the stationary contact in sequence, and the wire outlet end is further connected with the arc-extinguishing grid.
9. The gas insulated ring main unit with the load switch unit as claimed in claim 2, wherein: and one side of the electromagnetic repulsion mechanism is also provided with a controller and a position display connected with the crank arm.
10. The gas insulated ring main unit with the load switch unit as claimed in claim 1, wherein: the interior of the cabinet body is filled withWith an insulating medium of SF6Or 3M4710 and CO2Mixed gas or environmental protection gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022291107.XU CN213277925U (en) | 2020-10-15 | 2020-10-15 | Gas insulation looped netowrk cabinet with load switch unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022291107.XU CN213277925U (en) | 2020-10-15 | 2020-10-15 | Gas insulation looped netowrk cabinet with load switch unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213277925U true CN213277925U (en) | 2021-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022291107.XU Active CN213277925U (en) | 2020-10-15 | 2020-10-15 | Gas insulation looped netowrk cabinet with load switch unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213277925U (en) |
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2020
- 2020-10-15 CN CN202022291107.XU patent/CN213277925U/en active Active
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